Man is able to travel in time when gravity changes. In proving this postulate, physicists start from Einstein's theory of relativity.
The time travel assumption is based on the thesis that time flows slower in strong gravity and faster in weak gravity. If you trust this theory, a person living underground will age later than a resident of a high-rise building. The "time travel" effect occurs when you connect to both gravity and create a big difference in gravity.
Research into possible time teleportation is not new. In 1991, Professor Timothy Ralph first spoke about this possibility. He took advantage of the properties of quantum particles, which provide good room for maneuver while traveling in time. In 2014, Australian physicists simulated the motion of two photons at the quantum level. They managed to return a short period of time back by changing the polarization.
At the same time, British physicist Stephen Hawking believes that time travel is impossible.
The scientist agrees that Einstein's theory of relativity allows it. But, in his opinion, the so-called time machine, space and time can be destroyed by a burst of radiation due to the curvature of the environment.
Ivan Bogdanovich